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I want to add 2 smaller displays, what is the best card to add ? Find the same Nvidia Geforce 8800GT ? Or can I buy another one ?

Do i have to buy it specially for mac or are the pc video cards off the shelve working on the mac ?

THANKS!

Video cards are independent of each other. Of course, you will want a card that can drive your second monitor. Otherwise, it is OK to mix and match. You cannot, however, use Mac and PC cards interchangeably. They use different firmware.

Video cards are independent of each other. Of course, you will want a card that can drive your second monitor. Otherwise, it is OK to mix and match. You cannot, however, use Mac and PC cards interchangeably. They use different firmware.

Thanks for your message, so I will have to buy them from the apple store ?

Video cards are independent of each other. Of course, you will want a card that can drive your second monitor. Otherwise, it is OK to mix and match. You cannot, however, use Mac and PC cards interchangeably. They use different firmware.

back when I bought my second video card (I have 2 8800s) there were performance issues in osx (then leopard) with having both the ati and nvidia drivers loaded at the same time. I don't know if that's been ironed out or not, but you may want to either look into it or play it safe and pick up another nvidia card.

Sorry I'm not that technical but It seems to be a 8800 PCIe 2nd generation will work, but do I have 2 of those slots in my mac pro ? There seems to be a connection to the motherboard, does that second card needs that also ?

Sorry I'm not that technical but It seems to be a 8800 PCIe 2nd generation will work, but do I have 2 of those slots in my mac pro ? There seems to be a connection to the motherboard, does that second card needs that also ?

You have 2 slots on your machine allocated for 16-lane pci-e 2.0, yes. The card will come with a power cable, though you will have to plug it into the motherboard yourself (the second plug is right next to the one already used for your current card).

You have 2 slots on your machine allocated for 16-lane pci-e 2.0, yes. The card will come with a power cable, though you will have to plug it into the motherboard yourself (the second plug is right next to the one already used for your current card).

Thanks for all the posts, I installed the second video card into my macpro and it works perfectly.